Rick, That's awesome.
Why the decision to change the grain count from 2 to 3? It seems like it
was about the same impulse, what was the objective of the new geometry?
On Sun, Dec 24, 2017 at 5:33 AM Robert Clark <rgregoryclark@xxxxxxxxx>
wrote:
Looks great. I suppose you guys are still using steel casings? I'd like to
your mass ratios when you switch to aluminum, and then finally to carbon
fiber. BTW, there are filament winding machines available from Xwinder.com,
for costs in the range of $2,800 to $3,800.
Also, you could get significant altitude with a 2-stage using a single
grain as the upper stage.
Bob Clark
On Saturday, December 23, 2017, Rick Maschek <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
We used to blow things up all the time but lately we have a string of
successes (14 for 14)
Last weekend at FAR we had a successful 12" KNSB 3 grain motor burn,
previous had 2 grains...2 for 2 success for the 12" motor.
Perhaps when we are done testing (and flying) this motor case we might
push it to it's limit.
World's largest sugar rocket motor, 2nd test fire for Sugar Shot to Space
<https://www.youtube.com/watch?v=vnooBKx8mVw>
World's largest sugar rocket motor, 2nd test fire for Sugar Shot to Space
This was the 2nd test firing of the 12 x 44" KNSB static test fire motor
for the Sugar Shot to Space projec...
<https://www.youtube.com/watch?v=vnooBKx8mVw>
A team from a school in Southern California did blow their airframe apart
when their parachute got caught and blocked the deployment charge.
Date: Fri, 22 Dec 2017 18:57:12 -0700
Subject: [AR] SDR Antennas.
From: snyder@xxxxxxxxxx
From: "Monroe L. King Jr." <monroe@xxxxxxxxxxxxxxxxxx>solid
Subject: [AR] Re: SDR Radio's was "infrastructure" (was Re: Amateur
Date: Thu, 21 Dec 2017 13:35:19 -0700<snip>
Antennas have not changed and likely will not change much, that part of
the equation is relatively stable and is related to transmitted power,
that part of the equation is also relatively stable.
Nope.
Remember whip antennas on cellphones ?
(F antennas on circuit boards now)
How about GPS antennas the size of Pie Plates ?
(High Dielectric constant Ceramics Now )
I know a guy who made his retirement on cookie cutting arrays out
of copper foil and Styrofoam. SDR will change that more than Diversity
did your router.
Radio Technology pushes satellite technology, which pushes rocket
needs. I suppose this is not so far off topic, but I miss the flamey
discussions.
Anybody blow anything up lately ? :)
(The only full test is to destruction)
-G.
